How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs. Regular expressions, or “regex,” is a system for finding complex ...

In programming, a set of symbols used to search for occurrences of text or to search and replace text. The simplest regular expressions are DOS/Windows wildcards; for example, *.html refers to all ...

Regular expressions are a powerful tool for manipulating textual information, allowing you to perform the sophisticated processing you describe. Before I explain the solution, let's back up one step ...

Regular expressions come in handy for all varieties of text processing, but are often misunderstood--even by veteran developers. Here's a look at intermediate-level regular expressions and what they ...

Regular expressions might seem arcane, but if you do any kind of software, they are a powerful hacker tool. Obviously, if you are writing software or using tools like grep, awk, sed, Perl, or just ...

You know the maxim, “Give a man to fish and he eats for a day; teach a man to fish and he eats for a lifetime”? A similar adage applies to anyone who spends a lot of time working with text on their ...

Regular expressions — the things you feed to programs like grep — are a bit like riding a bike. It seems impossible until you learn to do it, and then it’s easy. Part of their bad reputation is ...

A quick run down on how you can use regular expressions in your own programs to give you more power over searching and substituting text. Perl has long been an extremely popular choice for text ...